Hydrocarbon burner



June 29 1926.

C. A. BERKINS HYDROCARBON BURNER Filed June 25; 1924 gal-012w 4.561/712) fi fiIJ'HW Patented June 29, 1926.

UN 5 T erannnon A. BEEKlNS, OFMINNEAPOLIS,MINNESOTA HYDEOCABBON BURNER.

Application filed June 25, 1924. Serial No. 722,279.

My present invention provides a simple and highly eflicient oil orhydro-carbon burner adapted for general use in furnaces, boilers, stovesand the like, and which is capable of easy adjustment tofire pots ordifferent sizes, which require a greater or less amount of generated oilvapor.

Generally stated, the invention consists of the novel devices andcombinations of devices hereinafter described and defined in the claims.

The commercial form of the improved burner is shown in the accompanyingdrawings, wherein like characters indicate like parts throughout theseveral views.

' Referring to the drawings:

Fig. 1 is a verical section taken through the burner and a portion ofthe grate structure; and

Fig. 2 is a plan view of the lowermost member of the stock or" dishedannular generating plates, showing the same removed from the burner.

The improved burner, as designed, comprises a box-like base member 8, aplate l mounted as a cover on the base, a goose-neck air delivery tube5, and a stack of dished annular generating plates, thestructure ofwhich latter will be presently described. The box-like base 3 has atransverse partition 6 that divides the same into an air intake chamber7 and a dead air chamber 8. The cover plate lis preferably flanged sothat it rests in proper position on the top of the base 3, and above thedead air chamher 8, there is formed a generating bowl 9 having at itsaxis an upstanding hub 10 preferably of conical form. The bottom surfaceof the bowl, surrounding but considerably outward or its hub 10, isprovided with circumferentially and radially spaced upstanding combinedheat-radiating and gas-reflecting pins 11 preferably cast integraltherewith. An oil or fluid fuel supply pipe 12 leads upward through thecompartment 8, is tapped through the hub 10 and extended considerablyabove'said hub, and at its upper end is threaded at 13. The dependingdelivery end of the large goose neck air tube 5 is terminated slightlyabove the horizontal plane of the upper edge ei the bowl 9 but islocated. concentric to the axis of said bowl and its hub 10, The

numeral 14 indicates an oil overflow pipe,

which leads from-the bowl '9 at a point be low its rim but above itsbottom.

I The device herein treated as the generating device proper is, asalready indicated, made up of a'plurality of dished annular generatingplates, the number of which may bevaried to suit the requirements of theparticular lire pot in which the burner is to be installed. As shown inthe drawings, it comprises three such generating plates, the lower ofwhich is indicated by the numeral 15, the upper by the numeral 16, andthe formed adjacent to the base of said hub,

and just outward of which shoulder, said lower plate 15 is formed with adished annular il-receiving channel 19. The upper plate 16 closes theopening in the aligning hub 18 and its lower portion is recessed so thatit is'nested over the upper end of said hub and preferably rested uponthe hub portion of the intermediate plate 1'7. The upper surface of saidplate 16 is dished to form an annular oil receptacle 20 and a raised hubportion, through which latter the threaded end 13 of the fuel pipe 12 istightly screwed. The intermediate plate 17, in its upper surface, isdished to form an annular oil-receiving channel 21.

It is now evident that when the elements 15, 16 and 17 are assembled asjust 'described, they will be held in axial alignment by engagement, theone with the other, and the nest will be held axially aligned with thehub '10 and bowl 9, by the fuel p The fuel pipe 12, instead of beingmade a continuous pipe, is preferably cut transversely in two at 22 andthe adjacent threaded ends of the two pipe sections are independentlyscrewed into the hub 10. This permits the main section of the "ipe 12 tobe first attached to the hub 10 and the pipe section of the desiredlength thereafter face of the lower plate 15,. and, of course,

if there is still unvaporized oil, it will run to the bottom of the bowl9. However, when dished surface of the lower plate 15.. Of

course, when the burner is in action, the air intake tube 5 will besubject to the flame and kept at high temperature so that the airdelivered at the point ofcombustion will be superheated and will assistin the rapid vaporization of the oil. The vaporized oil will becomming'led with the air as the air passes in an annular streamcompletely around the generating plates, and the com mingled air and oilwill be delivered downward and outward in a sort of an invertedumbrella-shaped blast and will be carried against and between the pinsor projections 11. From the statements just made, it will be understoodthat it is highly important that at least the uppermost generating platebe located upward within the delivery end ofthe air tube. Preferably,both the rims of both the upper and intermediate plates 15 and 17 arelocated within the delivery end of the air tube, so that there isprovided in the air delivery tube two contractions, and between saidcontractions an expansion or per generating plate to the the said bowland pins, because of the high temperature withinthe combustion chamber,will be kept hot enough to very'greatly assist in the thoroughconnningling' of the air and oil vapors and the generation thereof intoa more gaseous form, so that the combustion, when it takes place, willbe very rapid, intense, and complete.

The efiiciency of this burner has been thoroughly demonstrated inpractice.

What I claim is:

1. An oil burner comprising a bowl having a raised rim and a raisedcentral hub, an air delivery tube, the delivery end of which is locatedabove said bowl and is concenof, a stack consistingof upper, lower andintermediate generating plates, said generat-- ing plates having dishedannular surfaces, said lower plate having a raised tubular hub uponwhich the intermediate and upper plates are seated, and an oil deliverypipe extended upward through the hub of said bowl and passed axiallythrough said upcentral top portion thereof.

2. The structure defined in claim 1 in which the upper generating plateis within the delivery end of said air tube.

3. The structure defined in claim 1 in which said-bowl inward of its rimand outward of said stack of generating plates is provided withprojecting pins.

In testimony whereof I aflix my signature.

CLARENCE A. BERKINS.

